gcc/libgcc/config
Szabolcs Nagy 91d68665b8 libgcc: aarch64: Add SME unwinder support
To support the ZA lazy save scheme, the PCS requires the unwinder to
reset the SME state to PSTATE.SM=0, PSTATE.ZA=0, TPIDR2_EL0=0 on entry
to an exception handler. We use the __arm_za_disable SME runtime call
unconditionally to achieve this.
https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rst#exceptions

The hidden alias is used to avoid a PLT and avoid inconsistent VPCS
marking (we don't rely on special PCS at the call site). In case of
static linking the SME runtime init code is linked in code that raises
exceptions.

libgcc/ChangeLog:

	* config/aarch64/__arm_za_disable.S: Add hidden alias.
	* config/aarch64/aarch64-unwind.h: Reset the SME state before
	EH return via the _Unwind_Frames_Extra hook.
2023-12-08 11:29:07 +00:00
..
aarch64 libgcc: aarch64: Add SME unwinder support 2023-12-08 11:29:07 +00:00
alpha Update copyright years. 2023-01-16 11:52:17 +01:00
arc arc: Fix -Wincompatible-pointer-types warning during libgcc build 2023-10-13 09:34:36 +02:00
arm arm: libgcc: tweak warning from __sync_synchronize 2023-11-27 18:00:33 +00:00
avr Daily bump. 2023-11-14 12:23:39 +00:00
bfin Update copyright years. 2023-01-16 11:52:17 +01:00
bpf
c6x Update copyright years. 2023-01-16 11:52:17 +01:00
cris libgcc CRIS: Define TARGET_HAS_NO_HW_DIVIDE 2023-04-27 02:00:33 +02:00
csky csky: Fix -Wincompatible-pointer-types warning during libgcc build 2023-10-13 09:34:36 +02:00
epiphany Update copyright years. 2023-01-16 11:52:17 +01:00
fr30 Update copyright years. 2023-01-16 11:52:17 +01:00
frv [committed] Fix frv build after C99 changes 2023-12-02 21:54:36 -07:00
ft32 Update copyright years. 2023-01-16 11:52:17 +01:00
gcn GCN: Address undeclared 'NULL' usage in 'libgcc/config/gcn/gthr-gcn.h:__gthread_getspecific' 2023-11-03 15:49:27 +01:00
h8300 Update copyright years. 2023-01-16 11:52:17 +01:00
i386 libgcc: make heap-based trampolines conditional on libc presence 2023-10-24 08:35:44 +01:00
ia64 Update copyright years. 2023-01-16 11:52:17 +01:00
iq2000 Update copyright years. 2023-01-16 11:52:17 +01:00
libbid Update copyright years. 2023-01-16 11:52:17 +01:00
lm32 Update copyright years. 2023-01-16 11:52:17 +01:00
loongarch Update copyright years. 2023-01-16 11:52:17 +01:00
m32c Update copyright years. 2023-01-16 11:52:17 +01:00
m32r Update copyright years. 2023-01-16 11:52:17 +01:00
m68k [PATCH] libgcc/m68k: Fixes for soft float 2023-11-10 16:47:22 -07:00
mcore Update copyright years. 2023-01-16 11:52:17 +01:00
microblaze Update copyright years. 2023-01-16 11:52:17 +01:00
mips MIPS: Add speculation_barrier support 2023-06-05 11:22:00 +08:00
mmix Update copyright years. 2023-01-16 11:52:17 +01:00
moxie Update copyright years. 2023-01-16 11:52:17 +01:00
msp430 Update copyright years. 2023-01-16 11:52:17 +01:00
nds32 Update copyright years. 2023-01-16 11:52:17 +01:00
nios2 Update copyright years. 2023-01-16 11:52:17 +01:00
nvptx Update copyright years. 2023-01-16 11:52:17 +01:00
or1k or1k: Fix -Wincompatible-pointer-types warning during libgcc build 2023-10-13 09:34:37 +02:00
pa Add assember CFI directives to millicode division and remainder routines. 2023-04-05 14:44:54 +00:00
pdp11
pru libgcc pru: Define TARGET_HAS_NO_HW_DIVIDE 2023-05-01 11:08:51 +03:00
riscv riscv: Fix -Wincompatible-pointer-types warning during libgcc build 2023-10-13 09:34:36 +02:00
rl78 Update copyright years. 2023-01-16 11:52:17 +01:00
rs6000 libgcc _BitInt support [PR102989] 2023-09-06 17:33:05 +02:00
rx [committed] Fix rx build failure in libgcc 2023-12-02 22:07:59 -07:00
s390 libgcc: Use initarray section type for .init_stack 2023-06-04 22:39:32 -05:00
score Update copyright years. 2023-01-16 11:52:17 +01:00
sh Update copyright years. 2023-01-16 11:52:17 +01:00
sol2 Update copyright years. 2023-01-16 11:52:17 +01:00
sparc Update copyright years. 2023-01-16 11:52:17 +01:00
stormy16 Update copyright years. 2023-01-16 11:52:17 +01:00
v850 PR target/109402: v850 (not v850e) variant of __muldi3() moves sp in reversed direction [PR109402] 2023-04-08 08:26:00 -06:00
vax Update copyright years. 2023-01-16 11:52:17 +01:00
visium Update copyright years. 2023-01-16 11:52:17 +01:00
vms Update copyright years. 2023-01-16 11:52:17 +01:00
xtensa xtensa: add .note.GNU-stack section on linux 2023-03-13 13:42:18 -07:00
darwin10-unwind-find-enc-func.c Darwin, libgcc : Adjust min version supported for the OS. 2023-05-19 09:06:01 +01:00
darwin-64.c Update copyright years. 2023-01-16 11:52:17 +01:00
darwin-crt3.c Update copyright years. 2023-01-16 11:52:17 +01:00
darwin-crt-tm.c Update copyright years. 2023-01-16 11:52:17 +01:00
darwin-unwind.ver libgcc, Darwin: Build a libgcc_s.1 for backwards compatibility. 2021-12-08 19:53:28 +00:00
gthr-lynx.h Update copyright years. 2023-01-16 11:52:17 +01:00
gthr-rtems.h Update copyright years. 2023-01-16 11:52:17 +01:00
gthr-vxworks-cond.c Update copyright years. 2023-01-16 11:52:17 +01:00
gthr-vxworks-thread.c Update copyright years. 2023-01-16 11:52:17 +01:00
gthr-vxworks-tls.c Update copyright years. 2023-01-16 11:52:17 +01:00
gthr-vxworks.c Update copyright years. 2023-01-16 11:52:17 +01:00
gthr-vxworks.h Update copyright years. 2023-01-16 11:52:17 +01:00
hardfp.c Update copyright years. 2023-01-16 11:52:17 +01:00
libgcc-glibc.ver Update copyright years. 2023-01-16 11:52:17 +01:00
libgcc-libsystem.ver Darwin: Rework handling for unwinder code in libgcc_s and specs [PR80556]. 2021-11-19 19:58:11 +00:00
no-sfp-machine.h
no-unwind.h
t-crtfm
t-crtstuff-pic
t-darwin Darwin, libgcc : Adjust min version supported for the OS. 2023-05-19 09:06:01 +01:00
t-darwin-ehs Darwin, libgcc: Fix build errors on powerpc-darwin8. 2022-03-04 16:44:54 +00:00
t-darwin-min-1 Darwin, libgcc : Adjust min version supported for the OS. 2023-05-19 09:06:01 +01:00
t-darwin-min-5 Darwin, libgcc : Adjust min version supported for the OS. 2023-05-19 09:06:01 +01:00
t-darwin-min-8 Darwin, libgcc : Adjust min version supported for the OS. 2023-05-19 09:06:01 +01:00
t-darwin-rpath Config,Darwin: Allow for configuring Darwin to use embedded runpath. 2023-10-22 19:30:02 +01:00
t-dfprules
t-eh-dw2-dip
t-fdpbit
t-fixedpoint-gnu-prefix
t-fpbit
t-freebsd-thread
t-gnu-prefix
t-gthr-noweak
t-gthr-vxworks
t-gthr-vxworksae
t-hardfp Update copyright years. 2023-01-16 11:52:17 +01:00
t-hardfp-sfdf Update copyright years. 2023-01-16 11:52:17 +01:00
t-libgcc-pic
t-libunwind
t-libunwind-elf Update copyright years. 2023-01-16 11:52:17 +01:00
t-linux
t-openbsd-thread
t-rtems
t-slibgcc Update copyright years. 2023-01-16 11:52:17 +01:00
t-slibgcc-darwin Config,Darwin: Allow for configuring Darwin to use embedded runpath. 2023-10-22 19:30:02 +01:00
t-slibgcc-elf-ver
t-slibgcc-fuchsia Update copyright years. 2023-01-16 11:52:17 +01:00
t-slibgcc-gld
t-slibgcc-gld-nover
t-slibgcc-hpux
t-slibgcc-libgcc Update copyright years. 2023-01-16 11:52:17 +01:00
t-slibgcc-nolc-override
t-slibgcc-sld
t-slibgcc-vms libgcc: Honor LDFLAGS_FOR_TARGET when linking libgcc_s 2021-08-05 17:32:06 +02:00
t-softfp libgcc: Add {unsigned ,}__int128 <-> _Decimal{32,64,128} conversion support [PR65833] 2023-11-09 09:14:07 +01:00
t-softfp-compat
t-softfp-excl
t-softfp-sfdf
t-softfp-sfdftf libgcc _BitInt support [PR102989] 2023-09-06 17:33:05 +02:00
t-softfp-tf libgcc _BitInt support [PR102989] 2023-09-06 17:33:05 +02:00
t-stack
t-tls
t-vxcrtstuff Fix the vxworks crtstuff handling of kernel/rtp variations 2020-10-16 15:33:35 +00:00
t-vxcrtstuffS Tigthen libc_internal and crtstuff for VxWorks shared objects 2021-12-13 18:03:03 +00:00
t-vxworks Adjust LIBGCC2_INCLUDES for VxWorks and augment comment 2022-10-02 09:33:00 +00:00
t-vxworksae
unwind-dw2-fde-darwin.c Update copyright years. 2023-01-16 11:52:17 +01:00
vxcrtstuff.c Improve comments and INITFINI macro use in vxcrtsutff.c 2022-09-29 18:02:21 +00:00